Enabling Transparent Huge Pages with VxFS ODM on Red Hat Enterprise Linux (RHEL) 7.3 can lead to a panic

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Article ID: 100033981

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Updated On:

Description

Error Message

There are no error messages reported but the server reports performance issues/panics

Cause

Oracle recommends disabling Transparent Huge Pages (THP):
https://docs.oracle.com/en/database/oracle/oracle-database/19/ladbi/disabling-transparent-hugepages.html

Enabling THP on RHEL 7.3 with the VxFS ODM feature can cause a panic due to a mismatched definition of structure vm_operations_struct in the ODM kernel module, and the RHEL 7.3 kernel.

Resolution

This issue is currently under investigation by Veritas Technologies LLC. Pending the outcome of the investigation, this issue may be resolved by way of a patch or hotfix in current or future revisions of the software. However, this particular issue is not currently scheduled for any release.  If you feel this issue has a direct business impact for you and your continued use of the product, please contact your Veritas Sales representative or the Veritas Sales group to discuss these concerns.
 
Note: Customers experiencing this issue are encouraged to contact Veritas Technical Support as data is still being collected to assist in resolving this issue.

As a workaround, disable THP. Instructions can be found here: 
https://access.redhat.com/solutions/46111

More information can be found in Oracle Doc ID 1557478.1: Disable Transparent HugePages on SLES11, RHEL6, RHEL7, OL6, OL7, and UEK2 and above

Issue/Introduction

Enabling Transparent Huge Pages (THP) with the VxFS Oracle Disk Manager (ODM) feature on Red Hat Enterprise Linux (RHEL) 7.3 can lead to a panic.

Products affected:
  • Storage Foundation 6.2.1
  • InfoScale 7.1, 7.2
  • RHEL 7.3 with THP and ODM enabled
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